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增韧硅微粉是为增韧环氧树脂而研制开发的一种电工级专用填料。本文着重论述了硅微粉增韧的配方、工艺条件和增韧处理过程；通过对填充增韧硅微粉的环氧树脂固化物的冲击试验，证明了增韧硅微粉对环氧树脂具有明显的增韧效果；初步探讨了增韧硅微粉对环氧树脂增韧的机理。
Toughening silicon powder toughening epoxy resin is developed for the development of an electrical grade special filler. This article focuses on the toughening formula, process conditions and toughening treatment process of the silica fume; Through the impact test of the epoxy resin cured product filled with toughening silicon micropowder, it is proved that toughening silicon micropowder has a significant increase of epoxy resin Toughness effect; The toughening mechanism toughened by toughening silicon powder to epoxy resin is discussed preliminarily.